Run results for: Nullish coalescing (??) vs logical OR (||)

Run details:

User agent: Mozilla/5.0 (Windows NT 5.1; rv:68.0) Gecko/20100101 Firefox/68.0 Mypal/68.12.5

Browser: Firefox 68

Operating system: Windows XP

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Nullish coalescing (??)	1793684.0 Ops/sec
Logical OR (\|\|)	1510221.0 Ops/sec
Nullish coalescing (??) [short-circuit]	166590400.0 Ops/sec
Logical OR (\|\|) [short-circuit]	164611100.0 Ops/sec

Tests:

Nullish coalescing (??)
let x = null ?? undefined ?? null ?? undefined ?? null ?? undefined ?? null ?? undefined ?? null ?? undefined ?? 1;
Logical OR (||)
let x = null || undefined || null || undefined || null || undefined || null || undefined || null || undefined || 1;
Nullish coalescing (??) [short-circuit]
let x = 1 ?? undefined ?? null ?? undefined ?? null ?? undefined ?? null ?? undefined ?? null ?? undefined ?? 1;
Logical OR (||) [short-circuit]
let x = 1 || undefined || null || undefined || null || undefined || null || undefined || null || undefined || 1;